Results 21 to 30 of about 7,577,420 (289)
A High-Precision Error Calibration Technique for Current Transformers under the Influence of DC Bias
Energies, 2023 A bias current in the power system will cause saturation of the measuring current transformer (CT), leading to an increase in measurement error. Therefore, in this paper, we first conducted measurements of the direct current component in a 10 kV ...
Sanlei Dang +8 more
doaj +1 more source
Comparison of Mathematical Methods for Compensating a Current Signal under Current Transformers Saturation Conditions [PDF]
Sensors, 2021 Current measurements from electromagnetic current transformers are essential for the construction of secondary circuit systems, including for protection systems. Magnetic core of these transformers are at risk of saturation, as a result of which maloperation of protection algorithms can possibly occur.
Ismoil Odinaev +7 more
openaire +5 more sources
Digital Current Measurement Element for Operation During Current Transformer Severe Saturation
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2018 The development and implementation of a digital current measurement element for proper operation during current transformer (CT) magnetic core severe saturation are considered.
Yu. V. Rumiantsev +3 more
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Research on Transient Low-Frequency Oscillation of Electrified Railway Vehicle-Grid Coupling System
IEEE Access, 2023 At the moment of electric locomotive passing the neutral-section, the voltage and current of traction network may have low-frequency oscillation (LFO), which will seriously affect the safe operation of the railway. Aiming at eliminating the transient LFO,
Zhiyong Li +4 more
doaj +1 more source
Energies, 2020 Through the analysis of the recovery inrush current generated by the external fault removal of the converter transformer, it is pointed out that the zero-sequence current caused by the recovery inrush may result in the saturation of the neutral current ...
Tao Zheng +4 more
doaj +1 more source
The.main types of wind turbines-generators in the power supply system
Известия высших учебных заведений: Проблемы энергетики, 2022 THE PURPOSE. This paper considers the problem of relay protection functioning when the current transformer reaches the saturation mode which is provided by transient processes.METHODS. MATLAB Simulink software environment allows reproducing the method of
V. A. Novobritsky, D. S. Fedosov
doaj +1 more source
Current transformer saturation [PDF]
, 2020 V okviru magistrske naloge smo opisali različne vrste nasičenj tokovnih transformatorjev (TT) in razloge za njihov nastanek. Merjenje tokov je z vidika vodenja in zaščite naprav in omrežja nujen proces. Ker pri prenosu in distribuciji električne energije
Bevc, Jure
core
CURRENT TRANSFORMER ERROR COMPENSATION UNDER SATURATION CONDITION [PDF]
, 2021 The paper presents a method to compensate the error of current transformer under saturation condition. Based on least square method the factor decision process is shown.
Morozenko, N. A. +7 more
core
Current Transformer Saturation Detection Using Gaussian Mixture Models [PDF]
, 2013 This paper presents a novel current transformer (CT) saturation detection approach based on Gaussian Mixture Models (GMMs). High accuracy is the advantage of this method. GMMs are trained with secondary current of CT.
Hosseinian, S.H. +2 more
core +1 more source
Pre-breakdown Characteristics of Contaminated Power Transformer Oil [PDF]
, 2007 In this paper we have studied pre-breakdown characteristics of transformer oil in the presence of different levels of contamination. The contaminant is fibrous dust from pressboard insulation used for high voltage transformers.
Zuber, H M, Chen, G
core +2 more sources